Does the software have an adjustment to set the orientation of the main sensor orientation? If not, it should. The mouse is large and heavy, which means I hold it a little different. It would be nice if I could input a positive or negative number to adjust where true north is. Let me explain: If I open paint, close my eyes, and try to draw a perfectly horizontal line, when I open my eyes to see what I've done, the line is tilted by a few degrees. It would be great if your software allowed me to input - or + X, where X is the value of the degrees off flat I am.